In 2004, NASA scientists have spotted an unusual region in space. The area was much colder leading scientists to believe that it might be an evidence of a parallel universe. Recently, a new study on that cold spot in space further confirmed that it was indeed proof that the many worlds theory is true.

Researchers from Durham University revealed that the cold spot first discovered by NASA more than a decade ago could really be an evidence of a multiverse. One of the reasons that led to this theory was the unusual coldness of the region that spans 1.8 billion light years across.

Despite its massive size, the region has 10,000 less galaxy than the other regions with similar size. The study said that the cold region cannot be classified as a void and nor the unusual coldness be caused by "line of sight" effects.

Professor Tom Shanks, the co-author of the study, said that the most plausible explanation for the Cold Spot was that a bubble universe similar to ours collided with our own universe. He said that there are theories suggesting that if two universes collide with each other, the event can leave a detectable anisotropic distribution in the galaxy similar to a huge vehicle pileup in the motorway.

He said that further investigation can be done to prove that such theory of colliding universes is indeed real.

There are different theories why scientists believe that the multiverse is possible. One of these theories state that no one really knows the shape of space-time. Some scientists suggest it is flat and that it goes on forever.

Another theory follows the "daughter theory" in quantum mechanics where every outcome of a decision a person makes manifests in each of the universes in a different way. For example, if a person decides to go to France in one universe, he might be living in France already in another universe.